oxy::core::metadata::SqlGenerator Class Reference

Emits SQL WHERE clauses or SELECT statements for a parsed query AST. More...

#include <sql_generator.hpp>

Public Member Functions
	SqlGenerator (SqlConfig cfg)
OXYCORE_API std::string	select_star_where (const ExprNode &root) const
	Emit 'SELECT * FROM.
OXYCORE_API std::string	select_star_where (const std::string &table, const ExprNode &root) const
	Emit 'SELECT * FROM.
OXYCORE_API std::string	to_sql (const ExprNode &root) const
	Alias of where_clause() for semantic clarity.
OXYCORE_API std::string	where_clause (const ExprNode &root) const
	Convert root expression to a SQL WHERE clause fragment.

Detailed Description

Emits SQL WHERE clauses or SELECT statements for a parsed query AST.

Usage pattern:

Parser p;
auto ast = p.parse("name: john and age >= 30");
SqlConfig cfg; cfg.column = "data"; cfg.dialect = SqlDialect::SQLite;
SqlGenerator gen(cfg);
std::string sqlWhere = gen.where_clause(*ast);

Member Function Documentation

select_star_where() [1/2]

OXYCORE_API std::string oxy::core::metadata::SqlGenerator::select_star_where

(

const ExprNode &

root

)

const

Emit 'SELECT * FROM.

<expr>' using config_.table or fallback.

select_star_where() [2/2]

OXYCORE_API std::string oxy::core::metadata::SqlGenerator::select_star_where	(	const std::string &	table,
		const ExprNode &	root ) const

Emit 'SELECT * FROM.

<expr>' for a provided table name.